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rationalise 5+2square root 5 divided by square root 5.
please can someone help me on how to get the answer 2+square root 5

  • maths - ,

    (5 + 2sqrt(5)) / sqrt(5)
    Multiply numerator and denominator by
    sqrt(5):
    (5sqrt(5) + 2 * 5) / 5 =
    (5sqrt(5) + 10) / 5 =
    Divide numerator and denominator by 5:
    (sqrt(5) + 2) / 5

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